| 1 | 1 | class BowlingGame: |
| 2 | 2 | def __init__(self): |
| 3 | | pass |
| 4 | | |
| 3 | """ |
| 4 | Initialize a new bowling game. |
| 5 | |
| 6 | The game keeps track of rolls, current frame, and whether the game is finished. |
| 7 | """ |
| 8 | self.rolls = [] |
| 9 | self.current_frame = 0 |
| 10 | self.is_finished = False |
| 11 | self.frame_rolls = [] # Rolls in the current frame |
| 12 | |
| 5 | 13 | def roll(self, pins): |
| 6 | | pass |
| 7 | | |
| 14 | """ |
| 15 | Record a roll in the game. |
| 16 | |
| 17 | Args: |
| 18 | pins (int): Number of pins knocked down in this roll |
| 19 | |
| 20 | Raises: |
| 21 | ValueError: If pins is negative or greater than 10 |
| 22 | IndexError: If the game is already finished |
| 23 | """ |
| 24 | # Edge Case: Game already finished |
| 25 | if self.is_finished: |
| 26 | raise IndexError("Game is already complete") |
| 27 | |
| 28 | # Edge Case: Invalid number of pins |
| 29 | if pins < 0: |
| 30 | raise ValueError("Pins must be between 0 and 10") |
| 31 | |
| 32 | # Edge Case: More than 10 pins in a single roll |
| 33 | if pins > 10: |
| 34 | raise ValueError("Pin count exceeds pins on the lane") |
| 35 | |
| 36 | # Edge Case: In frames 1-9, check if current roll exceeds 10 pins in frame |
| 37 | if self.current_frame < 9: # Frames 0-8 (1-9) |
| 38 | if len(self.frame_rolls) == 0: # First roll of frame |
| 39 | self.frame_rolls.append(pins) |
| 40 | # If strike, complete the frame |
| 41 | if pins == 10: |
| 42 | self.rolls.extend(self.frame_rolls) |
| 43 | self.frame_rolls = [] |
| 44 | self.current_frame += 1 |
| 45 | else: # Second roll of frame |
| 46 | # Edge Case: Sum of pins in frame exceeds 10 |
| 47 | if self.frame_rolls[0] + pins > 10: |
| 48 | raise ValueError("Frame cannot exceed 10 pins") |
| 49 | self.frame_rolls.append(pins) |
| 50 | self.rolls.extend(self.frame_rolls) |
| 51 | self.frame_rolls = [] |
| 52 | self.current_frame += 1 |
| 53 | else: # Tenth frame (index 9) |
| 54 | self.frame_rolls.append(pins) |
| 55 | |
| 56 | # Check if we need more rolls in the 10th frame |
| 57 | if len(self.frame_rolls) == 1: |
| 58 | # If first roll is not a strike, continue |
| 59 | if pins < 10: |
| 60 | return |
| 61 | # If first roll is a strike, need two more rolls |
| 62 | else: |
| 63 | return |
| 64 | elif len(self.frame_rolls) == 2: |
| 65 | # If first was strike or second completes a spare, need one more roll |
| 66 | # Edge Case: Invalid second roll in 10th frame |
| 67 | if self.frame_rolls[0] < 10 and self.frame_rolls[0] + self.frame_rolls[1] > 10: |
| 68 | raise ValueError("Frame cannot exceed 10 pins") |
| 69 | |
| 70 | # If we have a strike or spare, we need one more roll |
| 71 | if self.frame_rolls[0] == 10 or (self.frame_rolls[0] + self.frame_rolls[1]) == 10: |
| 72 | return |
| 73 | else: |
| 74 | # Open frame in 10th, game is over |
| 75 | self.rolls.extend(self.frame_rolls) |
| 76 | self.is_finished = True |
| 77 | return |
| 78 | elif len(self.frame_rolls) == 3: |
| 79 | # Validate the third roll |
| 80 | # Edge Case: Invalid third roll in 10th frame |
| 81 | if self.frame_rolls[0] < 10: # First wasn't a strike |
| 82 | # Second must have been a spare to get a third roll |
| 83 | # Edge Case: Third roll invalid after spare |
| 84 | if self.frame_rolls[0] + self.frame_rolls[1] != 10: |
| 85 | raise ValueError("invalid fill balls") |
| 86 | # Third roll can't knock down more than 10 pins |
| 87 | if self.frame_rolls[2] > 10: |
| 88 | raise ValueError("Pin count exceeds pins on the lane") |
| 89 | else: # First was a strike |
| 90 | # Edge Case: Invalid fill balls after strike in 10th frame |
| 91 | if self.frame_rolls[1] < 10 and self.frame_rolls[1] + self.frame_rolls[2] > 10: |
| 92 | raise ValueError("Pin count exceeds pins on the lane") |
| 93 | if self.frame_rolls[1] > 10: |
| 94 | raise ValueError("Pin count exceeds pins on the lane") |
| 95 | |
| 96 | self.rolls.extend(self.frame_rolls) |
| 97 | self.is_finished = True |
| 98 | |
| 8 | 99 | def score(self): |
| 9 | | pass |
| 100 | """ |
| 101 | Calculate the total score for the game. |
| 102 | |
| 103 | Returns: |
| 104 | int: The total score of the game |
| 105 | |
| 106 | Raises: |
| 107 | IndexError: If the game is not yet finished |
| 108 | """ |
| 109 | # Edge Case: Game not finished yet |
| 110 | if not self.is_finished: |
| 111 | raise IndexError("Game is not yet complete") |
| 112 | |
| 113 | total_score = 0 |
| 114 | roll_index = 0 |
| 115 | |
| 116 | # Score frames 1-9 |
| 117 | for frame in range(9): # Frames 0-8 (1-9) |
| 118 | # Edge Case: Not enough rolls to score |
| 119 | if roll_index >= len(self.rolls): |
| 120 | raise IndexError("Score cannot be taken until the end of the game") |
| 121 | |
| 122 | # Check for strike |
| 123 | if self.rolls[roll_index] == 10: |
| 124 | # Strike: 10 + next two rolls |
| 125 | # Edge Case: Not enough rolls for strike bonus |
| 126 | if roll_index + 2 >= len(self.rolls): |
| 127 | raise IndexError("Score cannot be taken until the end of the game") |
| 128 | total_score += 10 + self.rolls[roll_index + 1] + self.rolls[roll_index + 2] |
| 129 | roll_index += 1 |
| 130 | else: |
| 131 | # Check for spare or open frame |
| 132 | frame_score = self.rolls[roll_index] + self.rolls[roll_index + 1] |
| 133 | # Edge Case: Frame score exceeds 10 (invalid) |
| 134 | if frame_score > 10: |
| 135 | raise ValueError("invalid frame scores") |
| 136 | |
| 137 | if frame_score == 10: |
| 138 | # Spare: 10 + next roll |
| 139 | # Edge Case: Not enough rolls for spare bonus |
| 140 | if roll_index + 2 >= len(self.rolls): |
| 141 | raise IndexError("Score cannot be taken until the end of the game") |
| 142 | total_score += 10 + self.rolls[roll_index + 2] |
| 143 | else: |
| 144 | # Open frame |
| 145 | total_score += frame_score |
| 146 | roll_index += 2 |
| 147 | |
| 148 | # Score 10th frame |
| 149 | # Edge Case: Not enough rolls for 10th frame |
| 150 | if roll_index >= len(self.rolls): |
| 151 | raise IndexError("Score cannot be taken until the end of the game") |
| 152 | |
| 153 | # Add the remaining rolls (could be 2 or 3 rolls in 10th frame) |
| 154 | while roll_index < len(self.rolls): |
| 155 | total_score += self.rolls[roll_index] |
| 156 | roll_index += 1 |
| 157 | |
| 158 | return total_score |
| 159 | # Handled Edge Cases: Game already finished, invalid number of pins, more than 10 pins in single roll, sum exceeds 10 in frame, invalid second/third roll in 10th frame, game not finished for scoring, not enough rolls to score, frame score exceeds 10, not enough rolls for strike/spare bonus |